动态SQL与模糊查询

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="org.mybatis.example.userMapper">
<!-- 多条件查询，name模糊匹配，age在最小值和最大值之间 -->
<select id="getUser"  parameteType="ConditionUser" resultType="User">
select * from user where
<if test='name!="%null%"'>
name like #{name} and
</if>
age between #{minAge} and #{maxAge}
</select>
</mapper>